text: #ifndef __DRV_LED_H__
  #define __DRV_LED_H__
  
  #include "LPC17xx.h"
  #include "lpc17xx_gpio.h"
  
  #define LED0    0
  #define LED1    1
  #define LED2    2
  #define LED3    3
  
  void led_init(void);
  void led_on(char led);
  void led_off(char led);
  
  #endif
  
  